HL7 interfaces

It has been a longstanding challenge to integrate patient data from EMRs (Electronic Medical Record systems) with EDC (Electronic Data Capture) systems for clinical studies and trials...These hurdles have been so high that the task has rarely been attempted in earnest, let alone accomplished in any significant way. That is until recently. How are these challenges being overcome today? What changes have allowed this integration to be to considered and implement today? The answer is: lots!